Hello LeapingLemur,Try this:
http://www.astrologysoftware.com/software/calculation/io/index.asp?orig=
It is Matrix Astrological Software for Mac computers. You should peruse the information. I use their professional software for my own business and I'm on Windows PC, but they have this especially for Mac.
I know a few astrologers who have the IO software but wish that it was more extensive. Unfortunately there's not much out there for Mac.
However, if you explore the www.Astro.com website, you can print many different kinds of charts directly from their website. I learned a lot of my computer technique on a PowerMac G4 and then on an iMac and used the Astro.com site frequently and know it inside out. There are days when I actually prefer the Astro.com website MORE than my own software because I've become so quick at it. There are certain areas of Astro.com that provides interpretations by world class astrologers Liz Greene, Robert Hand, and others that I can't name off the top of my head right now, but I highly recommend both the Astro.com site and the Matrix Astrology software.
One thing about the Matrix customer service you might like to know is:
THEY ARE THE MOST AWESOME CUSTOMER SERVICE PEOPLE IN THE ENTIRE WORLD!!!!! They are extremely knowledgeable friendly people who know their software inside and out. You can get to know them on a first name basis, and they bend over backwards to help you out in every way possible. And I say this without even knowing them personally at all.
You may also want to check out SolarFire astrology. There is a professional research astrologer on this site (he does other astrology as well) named Glaucus and he I'm pretty sure he uses Solar Fire. You will have to go to their website to find out if they make software for Mac. But basically Matrix and SolarFire are the top 2 Professional standard software choices in the industry right now.
I hope that helps.
Geocosmic Valentine
Professional Astrologer
geocosmicvalentine@yahoo.com
. www.myspace.com/geocosmicvalentine
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"Everybody is a star!"
Sly & The Family Stone